In the process of oil and gas drilling, water-based mud is generally used in shallow Wells and oil-based mud is used in deep Wells. Conventional solid control equipment can effectively recover heavy stone and useful drilling fluid items. If these solid phase parts containing heavy metals and compounds (about 12% to 18% oil content) are discharged without treatment, long-term precipitation will cause great harm to nearby vegetation, soil, groundwater and other natural environments and human living environment. With the continuous improvement of environmental protection requirements, high requirements are put forward for drilling site cuttings treatment. The emergence of drilling waste treatment and purification system can not only solve the site environmental problems, but also carry out secondary recycling and treatment of the waste generated by the on-site solid control system. While retaining useful mud, the drilling cuttings after reprocessing are centralized solidified. Reduce the damage to the surrounding environment.
Drilling waste treatment is to control the moisture content of drilling cuttings in drilling mud, stabilize the performance of the liquid phase, and achieve the purpose of dry treatment without landing, so that the liquid phase can meet the secondary reinjection utilization without damage. The environmental waste treatment system and the drilling mud non-landing treatment system can effectively realize the social value of the current environmental protection requirements and realize the economic value of the effective utilization of drilling fluid on the drilling site.
Drilling waste treatment and purification system (mud non-landing system) usually includes dry vibrating screen, drilling chip drying machine, environmental protection centrifuge, screw conveyor, screw pump, etc. These mud non-landing equipment can be scientifically combined and configured according to the properties of the waste pulp separated from the solid control screen of the field drilling.
